Answer to Question #131339 in Optics for will

Question #131339
A car travels at 50 mph for 2 hours. It then travels another 200 miles at an average of 60 mph. What was the car's average speed for the entire trip?
1
Expert's answer
2020-09-01T11:01:39-0400

Distance=speed×timeDistance= speed\times time. For the first part of the journey distance will be d=50mph×2hrs=100miles.d=50mph\times 2hrs= 100miles.


Total time taken for second part of the journey=20060=3.33hrs.\frac{200}{60}=3.33hrs.


We know that =Averagespeed=totaldistancetotaltimetakenAverage speed=\frac{total distance}{total time taken}. Therefore,


Totaldistance=100miles+200miles=300miles.Total distance= 100miles+200miles= 300miles.


Totaltimetaken=2hrs+3.3hrs=5.3hrs.Total time taken= 2hrs+3.3hrs=5.3hrs.


Thus,Averagespeed=3005.3=56.6mphAverage speed= \frac{300}{5.3}= 56.6mph



Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment